* { box-sizing: border-box; }

:root {
  --bg: #ffffff;
  --fg: #1a1d21;
  --muted: #6b7280;
  --accent: #2563eb;
  --bar-bg: #f3f4f6;
  --tabbar-bg: #e4e6ea;
  --border: #d1d5db;
  --ok: #16a34a;
  --warn: #d97706;
  --err: #dc2626;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418;
    --fg: #e6e8ea;
    --muted: #8b929b;
    --accent: #3b82f6;
    --bar-bg: #1a1f26;
    --tabbar-bg: #0c0f13;
    --border: #2c333c;
  }
}

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.5 system-ui, sans-serif;
}

button {
  font: inherit;
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
  cursor: pointer;
}
button:hover { border-color: var(--accent); color: var(--accent); }
button.linklike { border: none; background: none; color: var(--muted); padding: 0.25rem; }
button.linklike:hover { color: var(--accent); }
button.danger:hover { border-color: var(--err); color: var(--err); }

/* --- page pad --- */
.pad-page { display: flex; flex-direction: column; height: 100dvh; }

/* Barre d'onglets façon Chrome : l'onglet actif fusionne avec la toolbar dessous
   (même fond, margin -1px qui recouvre la bordure de la barre). */
.tabbar {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  padding: 0.4rem 0.5rem 0;
  background: var(--tabbar-bg);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  scrollbar-width: none;
  flex-shrink: 0;
}
.tab {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.5rem 0.3rem 0.9rem;
  border: 1px solid transparent;
  border-bottom: none;
  border-radius: 8px 8px 0 0;
  background: transparent;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9em;
  white-space: nowrap;
  margin-bottom: -1px;
  cursor: pointer;
}
.tab:hover { color: var(--fg); background: var(--bar-bg); border-color: var(--border); }
.tab.active {
  background: var(--bar-bg);
  border-color: var(--border);
  color: var(--fg);
  font-weight: 600;
}
button.tab-new { padding: 0.3rem 0.7rem; font-weight: 600; }
button.tab-new:hover { color: var(--accent); }
button.tab-close {
  border: none;
  background: none;
  color: var(--muted);
  padding: 0 0.15rem;
  font-size: 1.05em;
  line-height: 1;
  border-radius: 50%;
}
button.tab-close:hover { color: var(--err); background: none; border: none; }

.topbar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: var(--bar-bg);
  border-bottom: 1px solid var(--border);
}
.topbar-side.left { display: flex; align-items: center; gap: 0.5rem; justify-self: start; min-width: 0; }
.topbar-side.right { display: flex; align-items: center; gap: 0.5rem; justify-self: end; }
.topbar-center { display: flex; gap: 0.5rem; justify-self: center; }

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--err);
  display: inline-block;
  flex-shrink: 0;
}
.status-dot.online { background: var(--ok); }
.status-dot.reconnecting { background: var(--warn); }

.peers { color: var(--muted); font-size: 0.85em; white-space: nowrap; }

.notice { padding: 0.4rem 0.75rem; background: var(--warn); color: #fff; }

.trash-panel {
  position: fixed;
  top: 5.4rem;
  right: 0.5rem;
  min-width: 17rem;
  max-height: 50vh;
  overflow-y: auto;
  padding: 0.4rem;
  background: var(--bar-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 6px 20px rgb(0 0 0 / 0.25);
  z-index: 10;
}
.trash-row { display: flex; align-items: center; gap: 0.6rem; padding: 0.25rem 0.3rem; }
.trash-name { font-weight: 600; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.trash-when { color: var(--muted); font-size: 0.85em; white-space: nowrap; }
.trash-row button { padding: 0.25rem 0.6rem; font-size: 0.85em; }
.trash-empty { margin: 0.3rem 0.5rem; color: var(--muted); }

#pad {
  flex: 1;
  width: 100%;
  resize: none;
  border: none;
  outline: none;
  padding: 1rem;
  background: var(--bg);
  color: var(--fg);
  font: 14px/1.6 ui-monospace, SFMono-Regular, Menlo, monospace;
}

@media (max-width: 540px) {
  .peers { display: none; }
  button { padding: 0.35rem 0.6rem; }
}

/* --- page login --- */
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100dvh; }

.login-card {
  width: min(92vw, 22rem);
  padding: 2rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bar-bg);
}
.login-card h1 { margin: 0 0 1rem; font-size: 1.4rem; }
.login-card form { display: flex; flex-direction: column; gap: 0.5rem; }
.login-card label { color: var(--muted); font-size: 0.85em; }
.login-card input {
  font: inherit;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
}
.login-card button { margin-top: 0.75rem; background: var(--accent); border-color: var(--accent); color: #fff; }
.login-card button:hover { color: #fff; opacity: 0.9; }
.login-error { color: var(--err); margin: 0 0 0.5rem; }